Biofilm Composition and Threshold Concentration for Growth of Legionella pneumophila on Surfaces Exposed to Flowing Warm Tap Water without Disinfectant.

ABSTRACT: Legionella pneumophila in potable water installations poses a potential health risk, but quantitative information about its replication in biofilms in relation to water quality is scarce. Therefore, biofilm formation on the surfaces of glass and chlorinated polyvinyl chloride (CPVC) in contact with tap water at 34 to 39°C was investigated under controlled hydraulic conditions in a model system inoculated with biofilm-grown L. pneumophila The biofilm on glass (average steady-state concentration, 23 ± 9 pg ATP cm^-2) exposed to treated aerobic groundwater (0.3 mg C liter^-1; 1 μg assimilable organic carbon [AOC] liter^-1) did not support growth of the organism, which also disappeared from the biofilm on CPVC (49 ± 9 pg ATP cm^-2) after in

SUBMITTER: van der Kooij D 

PROVIDER: S-EPMC5311405 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature